Ecology of the methylotrophic bacteria on living leaf surfaces
Article first published online: 27 MAR 2006
FEMS Microbiology Letters
Volume 62, Issue 4, pages 243–249, June 1989
How to Cite
Corpe, W.A. and Rheem, S. (1989), Ecology of the methylotrophic bacteria on living leaf surfaces. FEMS Microbiology Letters, 62: 243–249. doi: 10.1111/j.1574-6968.1989.tb03698.x
- Issue published online: 27 MAR 2006
- Article first published online: 27 MAR 2006
- (Received 26 May 1988, Revision received 10 November 1988, Accepted 24 November 1988)
- Methylotrophic bacteria;
- Trifolium repens;
- Leaf heterotroph
Abstract Pink-pigmented, facultatively methylotrophic bacteria (PPFMs) are a substantial part of the aerobic, heterotrophic, microflora of young leaf surfaces. They were most numerous on white clover (Trifolium repens) leaves in the summer. The pink bacteria averaged 36% of the total heterotrophic count/cm2, with a range of 3 to 79%.
The growth of PPFMs on multicarbon compounds is much lower than that of other numerically important leaf heterotrophs. Free methanol of endogenous origin, is present in growing leaves. The availability of methanol at the leaf surface may allow the PPFMs to compete successfully with other heterotrophs that require multicarbon compounds, that are also leached from the growing plant surfaces.
SEM studies showed epiphytic bacteria to be most abundant near the margins of the abaxial surfaces of leaves. Microcolonies of bacteria on leaf surfaces were often covered with a thin layer of material, the source and nature of which has not been determined.